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May 10, 1927.

b62735? A. R. MISKIN ROAD SCRAPER Filed June 26 1925 lli Illlllll I I"glwuvntoz Patented May 10, 1927.

UNETEE) STATES ARTHUR R. IVIISKIN, OF UCON, IDAHO.

ROAD SCRAPER.

My invention relates to road scrapers in which are employed blades forscraping and smoothing road beds or other earth surfaces over which theymay be dragged, the blades usually being of metal and set vertically, ornearly so, and aaange-d diagonally to the course of the scraper, as inoperation it is moved over the ground. It has heretofore usually beenthe practice to construct the scraping bars or blades of apparatus ofthe kind referred to, of wooden bars, reinforced with metal to formcutting or scraping edges that may be easily maintained sharp and of thedesired outline. However, there are objections incident to this form ofroad scraper, such as exec ive weight, cumber someness, cost ofmanufacture, and tend ency to clog in operation due to cumbersomeconstruction.

My invention consists in a road scraper formed of metal bars supportedvertically so as to present to the surface to be operated upon cuttingor scraping edges, the bars being united to each other in a novelmanner, as will be described, to produce a Very rigid frame.

In the drawings,

Figure 1 is a perspective view of a road scraper made according to myinvention.

Figure 2 is a rear elevation of the device.

In the drawings, 2, 2 indicate the lon gitudinal bars of the apparatus.These, like the other bars that constitute the blades of the scraper andwhich will presently be described, are formed of steel, stock materialof 6 inches in width, and of an inch in thickness, being well suited foran ordinary road scraper. These side bars are united at their forwardends by a cross connecting piece 3, which may be of wood, so as toconstitute a sort of platform for the operator. Jpon this cross piece issupport ed the drivers seat 4. Between and uniting the longitudinal sidebars are the ding onally disposed scraper blades, which are arranged intwo sets, oppositely inclined, and crossing each other at approximatelyright angles. One set of parallel scraper blades is formed of thediagonal. bars 6, and 6, 27. While there are but two blades in this set,a greater number might be used if a scraper larger or longer than thatshown should be made. The other set of parallel diagonal scraper bladesis formed of the bars 7, 7, and 8; the blades of the two sets crossingeach other intermediate the longitudinal side bars and being unitedattheir intersections. The diagonal bar 6 is secured at its front end tothe side bar 2, preterably beneath the connecting piece 3, whence itextends rearwar-dly entirely across the scraper to the opposite sidewhere it is united, at 13, to the rear diagonal bar 8. The bar 6 isdisposed vertically throughout the greater portion of its length, sothat its lower edge serves as a scraping or cutting blade to act on theroad or other surface over which the apparatus may be dragged. 'l. oward its rear end it is twisted.

as at ll, to produce a horizontal portion,

12, that extends across the upper edge of the diagonal. bar 8 close toits attachn'aent to the side bar 2. The rear end of the bar 6 is bentdownward, as at 13, so it may lie close against the rear face of the bar8 to which it is secured fast, as by rivets. The diagonal bar 6, which.approximately parallels the rear half of the bar (3. is attached. at 10,to the longitudinal bar 2 at about its middle. It is throughout its mainportion vertically disposed, and is formed near its rear end with atwist 11, a horizontal part 12 that crosses the upper edge of the bar 8at about its middle part, and a down wardly bent end 13' that is securedfast to the rear face of the bar 8. The diagonal blade. formed in partby the bar 6, is continued, in its general direction, by the bar 2?,which attached at 25% to the rear diagonal bar 8 and extends thence tothe rear end of the longitudinal bar 2, to which it is secured at 21.The bar 27 is slightly twisted so that the lower edge of its rearportion 23 lies in a plane higher than that occupied by the edge of theforward part of the bar 27, leaving an open space 25 be low the rearportion of this rear diagonal bar, for a purpose to be described. Thelongitudinal bar 2 is twisted near its rear end at 19 so that there isformed an elevated horizontal portion 20 that crosses the upper edge ofthe diagonal bar 27 near its rear end, and the end of the bar 2 isturned downward at 21 and riveted or otherwise securely united to saidbar 27. The front diagonal blade of the other set crosses the blade 6 atabout right angles, and is, for construction purposes, formed of twoparts, 7, 7. The former is riveted or otherwise secured to thelongitudinal bar 2, preferably beneath the cross piece 3 and directlyopposite the connection of the bar 6 with Rina] bar (3 near its middle.

the longitudinal bar 2'. Near its rear end and adjacent to the bar 6,the bar 7 is twisted, at 16, so that there is formedahorizontal portion,17, adapted to cross over the diag- The endof the bar 7 dowit-turned andis riveted or otherwise secured to the bar ti, at if). The set-oralportion, 7, of this diagonal blade is secured, at if), to the diagonalbar (3, is twisted at ll) to form the horizontal portion 1.7, andsecured,-at 18, to the diagonal blade (5 adjacent to its connection withthe side bar 2. The rear diagonal blade 8 is secured at its forward end,at 26, to the longitudinal bar 2, is secured at its middle to thediagonal blade formed of the bars 6 and 27, and at its rear end issecured, at ll, to the rear end of the longitudinal bar 2. The latter istwisted at 19 so as to form the horizontal part, 20, that extends overthe upper edge of the rear diagonal blade 8. The blade8 is bent ortwisted so that the lower edge of its rear portion 22 occupiesa'position above the general cutting plane of the scraper, there beingthus left an open space 25 below this elevated lower edge of the rearpart of the blade 8.

It will be seen from the foregoing description that the scraper isformed with oppositely inclined diagonal blades rigidly united with'eachother at their intersecting points, and at their ends secured to thelongitudinal side bars, thus producing a very rigid and well bracedframe. The intersecting scraping blades produce a series of spacesenclosed by the blades, the central space,between the blades 6, 6 and'7, 8,-being four-sided, and the others triangular. It will also be seenthat there formed at: the rearinost corner of each of the enclosedspaces an opening 24, below the horizontal portion of one of thediagonal blades bounding such enclosed space, and adjacent to anoppositely inclined diagonal blade bounding another space. Theseopenings permit the earth and the material that may be removed from thesurface of the ground by the scraping blades, which does not lodge inthe depressions of the Sill'ftltO over which the scraper being dragged.but moved bythe diagonal blades towards the openings 2st, to passthrough the same into the next enclosed space, to be there caught by adiagonal blade bounding that space and carried across the surface beingoperatedupon to till the de ingz s in ridges at the sides of the path ofthe apparatus, as is customary with scrapers of this kind. Some of thematerial linally delivered at the mar. of the scraper will be of suchsize as to preclude its passing through the spaczs beneath the rearmostdiagonal blades, ind this passes through the openings 24.

The scraper is provided with any imitable draught attachmen as indicatedat 53, which may be seen :cd to metal l ace pieces 5) secured to theunderside of the front connecting piece 2-3, and at their rear ends tothe diagonal blades (3 and '4'.

A scraper such as described is very still and rigid in. itsconstruction; weighs much less than a wooden scraper reinforced withmetal scraping blades, and yet has snllicient weight for practicalpurposes; is less cumbersome than a wooden scraper, and operates moresatisfactorily, because the material moved by the cutting blades canno'.lodge wider the blades and be dragged by the scraper, as occurs whenrelatively wide wooden bars are employed to constitute the frame of theapparatus.

1 wish it to be understood that my ll'l 'Q1] tion is not limited in itsuseful applications to the l mrticrrlar structure shown, since thenumber of bars, and the size of parts, may be varied from what is shown,and some of the features might be used in a. metal-reinforced woodenframe scraper. Therefore, the invention is not to be limited beyond whatis expressed in. the claims hereof.

hat I claim is:

1. A road scraper, con'iprising diagonal blades arranged in oppositelyinclined sets which cross each other. the blades being rigidly securedto each other at their intersections and at their ends secured to sideframe pieces of the scraper.

2. A road scraper, con'iprising diagonal blades arranged in oppositelyinclined sets whieh'cross each other, thus forming spaces enclosed bythe blades, there being openings from the rear portion. of one enclosedspace into an adjacent space located toward the rear. whereby the earthmaterial moved by the blades caused to pass across the surface beingacted upon and subjected to the action of the blades to filldepressions.

3. A road scraper, comprising longitudinal side bars and diagonalscraping blades between the side bars, such blades being arranged in twosets that cross each other, the blades being rigidly connected to eachother at their intersections and at their ends scoured. to the sidebars, the intersecting blades forming enclosed spaces, and there beingopenings in the rear-most corner of each space for the passage otmaterial moved by the scraper blades.

l. A road scraper, comprising side longitudinal. bars and diagonalscraper blades formed of metal supported on edge, the blades beingarranged in two oppositely inclined sets that cross each other andunited at their places of intersection, certain of the blades beingshaped adjacent to their intersections to have horizontal parts underwhich are spaces through which material moved by the blades may pass.

A scraper, comprising longitudinal side bars and diagonal scraperblades, oppositely inclined and crossing each other, the rear ends ofthe rearmost scraper blades being rigidly secured to and supported bythe rear ends of the longitudinal bars, and the latter being formed withhorizontal portions that are raised above the cutting plane of thescraper, whereby are formed spaces through which material moved by theblades may be delivered at the sides of the scraper.

6. A scraper, comprising longitudinal side bars, and diagonal scraperblades, oppositely inclined and crossing each other, the rear ends ofthe rearmost scraper blades being rigidly secured to and supported bythe rear ends of the longitudinal bars, and the lower edges of'the rearend portions of said blades being elevated above the cutting plane ofthe scraper to permit line material to pass under the same and be spreadby the scraper, the rear ends of the longitudinal bars adiacent to theirconnections with the scraper blades being constructed to form Spacesthrough which coarse material moved by the blades may be delivered atthe sides of the scraper.

7. A road scraper, comprisin a pair of longitudinal side bars, disposedvertically, their rear ends being twisted to form raised horizontalportions, apair of diagonal cutting blades formed of metal bars setvertically, another pair of oppositely inclined diagonal cutting bladesformed of metal bars set vertically, the oppositely inclined bladesintersecting each other and being rigidly united at their intersections,and one blade at each intersection being twisted to form a horizontalpart that overlies the blade it intersects, and the rear ends of therearmost blades being united With the raised horizontal rear portions ofthe longitudinal bars, there being spaces enclosed by the side bars andthe blades, which spaces are connected by openings beneath the saidraised horizontal portions of the blades.

ARTHUR R. MISKIN.

